Other Parts Discussed in Thread: LM2742
Hi Team,
My customer use PNP to give PWR EN signal to LM2842 SHDN PIN. The SCH is following. However, When PNP is turn-off, the voltage of PWR_EN is 0V, but LM2842's output is 3V not 0V.
However, when disconnect the PNP and just let the PWR_EN connect to GND with R89, the output of LM2742 is nearly 0V .(several mV).
Could you please give some advice about that? Thanks a lot!